Traction-increasing device



' links whichfconnect the arms tothe wheel. f

UNITED sTArss i roonLYN-'Eivrrnn oLLrvInn,y vor- HAUTE-sAvoIE, FRANCE.

'rammen-INCREASING nEvIoE.

I y Specification of Lettersilatent, *Paggnite'dfsept 14,

Application mea August 1o, 1917. senainb. 185,482.

To all whom t may Concern:

VIER, a citizen of France, residing Haute- Savoie, France, have invented new and useful Improvements in Tractionllncreasing Devices, of which the following is a speci-4 fication. Y Y

T his invention relates `to automobilesleds andV has particular reference vto driving means therefor. y My invention has as its purposes to provide certain hereinafter described improvements in the driving. mechanisms. disclosed in United- States lLetters Patent'V No. 1,225,998 and 1,225,999, granted to me May 15th',1917. j

In the accompanying drawings:

' 'Figure 1 is al transverse sectional. view through the'felly'rportion' of a twin wheel and shows one ernlzirodiment of my invention.l Fig.`2 is. an elevational view of the structureshown .in Fig. 1, with one-half or part ofthe'twin .wheelremovech the major portion of the remaining wheel section being broken away.,

' "Fig, 3 is 'an enlarged detail .View taken transversely through .the means for. securing the spike-carrying member to the wheel. v

Fig. 4; is a perspective viewof a slightly modified form ofspike. f

Fig. 5 is a vertical sectionalview through a' twin wheel vhav-ing .both` tread members mounted on the sameV felly and lillustrates another embodiment of my invention.v

, Fig. -6 is a v iew similar to Fig..5, aportion of thel tread -membersbeing broken away, and shows'another form of myfinfvention. v Fig. 7 -is a transverse sectional vview through an improvedV connection between the Varms which carry therspik'es `and the `A V'Fig;Y 821s a side elevational view of ay ring orfband which encircles .the felly.` of the slightly -which the spikes are connected- 4 wheel shown in Figs. 5 and VFig. 9 is a vsectional view through a diiferentfform of Vband `or ring to In the drawings,'like characters represent wheels, 5.,5

like partsthroughout the severalviews... In

the embodiment'disclosedin Figsyl to 3, l-

have shown one form of my invention applied to a twin wheel made up of a pair of reach having afelly 10, a metallic rim 11,"and a tread member 12 carried by Y the' Im 114th@ Illerilbeis inithegpre'sent Be it'known that LJoonLYN-EMILE OLLI- toO the wheel.l lhisv'rneans, in Figs. 1 to 3, comprises a -ring'or band r13 having an eX.- ternal circumferentialflange 141..: The bandl 13 is preferably formed 'of a Stripof T-iron 65 by which the spikesyor teeth areeonnected bent into circular` formandhaving` its .op-` 'e posite ends welded, together.v Secured to the internal surfacel of the ring 13 by means ofy rivets, welding, or the like, are spaced# apart transverselyextending tubular guides 15. 16 designates plungers havinggenlarged inwardly," asuat 17,*so-as to correspond to the convexity of y,the rim 11. Each .of the plungers has a stem 18 slidably .mounted within .the'bore of thetubular; guides 1.5L Each of the guides .15 receives the stemsv of vtwo of jthe ,plungers and between .the opn posing ends of the stems 18 is acoil spring 194 which urges the plungers outwardly and headsror, endslwith their outer faces curved v retains the concave .portions 171'thereof against thesidesfof the rim/5.11..

The spikes, designated by the extend transversely ofthe tread members 12,

and each is connected intermediate Aits ends Vto an v arm 2 1 locatedv in the `annular space.' between the vtires'12. .They spikes' are preferff'-,

ably constructed of bars triangular in cross section andA .have one angle ifaced. outwardly of the-tread membersjso -vasj to provide an edge whichy bites --into the surface of the snow over whichylthe sled is traveling. Preferablythespike 2 0ishinged intermedi'- ate its' ends to Athe 'outer Vend of the arm 21 on V a transverse?A line or vpivot so thatv the 'Y spike may more easilyaccommodate itselfzto the deformation oftheV tires when the latter are passing over undulations or rough sur'- faces, and thus Vstrains on the connection between the spike andthering 13 are ob- V viated. g i

In Fig'. 4:, ithe, arm 21 yis-illustrated as being integral with the spike 20".

numeral 20, f

' `Each of the arms 21 is connected to ...the

131.by means of apair' oflinks22.i

VVplace by screws 29.-

vand with the curved of these springs' is great l extent, and due to The links 22 at their inner ends are hingedly connected to the Harige 14 of the ring 13 by pintles 23. v The outer ends of the links are connected to the arms 21 by means of pins 24. It will be seen from the drawings that the arms 2l are in the same plane as the flange 14, that the inner ends of the arms extend beyond the 'points where they are pivoted to the links 22, and the arms are oppositely Vcurved at their opposite ends so that the flat surfaces on the backsof the spikes may engage ifiatwise against the tires' and .the inner ends of the arms engage against the periphery of the flange 14. On the flange 14 adjacent Vthe pintles 23 are stops 25 y against which the links engage uponV rotation of the wheel to limit the movement of the spikes.

. If desired, the arm 21 may be secured to the links 22 in a manner shown in Fig. 7. In this ligure, the arm has a spherical recess or socket 26 which receives a spherical ball 27 located centrally of the pin 24. To facilitate removal of the ball from the socket, one-half of the socket is located within the body portion of the arm, and the other half in a block 28 removably lsecured in K This arrangement Y permits ofa slight lateral movement of the arms relative tothe links without exerting any lateral strain Vupon the latter.

W'Vith the structure shown in F igs. g1 to 3,' when inserting my improved mechanism in the space between the tread surfaces, one of the members of the composite twin wheel is removed from the aXle of the vehicle; the ring 13, 13, together withthe parts carried thereby, is then placed adjacent the part of the wheel still remaining on 'the aXle, surfaces 17 of the plungers 16 extending from one side of the ring in engagement with the rim 11. The other wheel section is then slid upon the axle .and when `forced into place engages theplungers 16 extending toward'the wheel sectionl from A ring 13. The springs V19 are placed under compression, and the force enough to cause the plungers to firmly grip. the rims.

When* the vehicle is moving the wheel rotates and the spikes or teeth 20 are successively brought into Contact with the snow.

-' rIhe stops 25 prevent the links from movin clockwise direction tot-oo great a.

the engagement vbetween the ends of the arms 21 and the flange 14, the teeth orspikes 2G are prevented from separating any greatdistance from the tires.

In the embodiment shown in Fig. 5, I have illustrated a sliO-htly different form of my invention applied to a twin wheel having Aboth of the rims llfcarying thetires 12 secured to a single felly l0. Surrounding that portion of the felly between the rims lformed j of T-iron Vadapted to connect to limit turning movement of the arm and v an inwardly ends forked, andbetween the yoke arms of` which are ysecured the flange 14 and the arm21. Y v' the embodiment shown in .6, is illustrated the same type of wheelfas that shown in the preceding 'gure In thisV instance, however, the band or ring 13 is censtructed `of'tubing 'through which extend spaced-apart sleeves 30 which forni bearings for the pintles 23.

It is, of course, understood that my invention is vsusceptible of various modifications and changesv which would be within the spirit of the invention without departing from the scope of the following claims. As illustrating one of the numerous other changes which may be made in my structure, I have shown in Fig. 9, the ring 13 Y as comprising a band formed of angle-iron.V lhat I claim is:

1. Ilie combination with a vehicle wheelV ofV a ring arranged between the treads and adjacent the rim yof the wheel, links pivotally connected Awith and extending outwardlyv from said ring, and arms each plvotally connected at 'an intermediate point in its length to 'one of the links and. each arm having at its outer end an spike that projects beyond the tread surfaces, the inner ends of said arms being with the supporting ring spike relative to the wheel in one direction.

2. The combination with a vehiclewheel havingarpair ofy spaced apart tread surfaces, of a ring, of angular form in 4cross section, arranged 'adjacent the wheel-rim between the tread surfacesy and having one member Vextending radially outward from said rim, links pivotally connected at'their inner ends to said radially projecting mem# her of the ring, a lever pivotally connected to each link and extendingcircumferen# tially of the wheel between the tread surfaces thereof, and spikes each' extending ktranseversely across the tread surfaces'and provided'intermediate of said'surfaces with projecting member which is pivotally connected to one of saidleversff 3. The having arranged adjacent the wheel rim vbetween the tread surfaces thereon, aimsV projecting laterally from said ring and having their outer ends concaved kto receive 'portions of the wheel rim adjacent the base l'of each tread portion, means y for yieldingly forcing/said arms into l individual combination with a ,vehicle Wheel4 a pair of Vtread surfaces, of a ring engagement with the riin, and 1.30

4. rJhe combination with a vehicle wheel having a pair of kspaced apart tread rsurfaces, of a ring of angular' form in Cross section, arranged adJaoent the wheel rim between the tread surfaces and having one member extending'radially outward from v said rim, bifuroated links extending on opposite sides of and pivotally connected to said radially projecting member of the ring, a lever extending between thev members of each link and pivotally connected thereto at an intermediate point in its length, the inner end of each lever being adapted to Contact with said ring to limit turning movement of the lever in one direetion about vits pivotal oonneotion with its i 2O i supporting link,v and an individual `spike pivotally connected with theouter end of each lever and positioned beyond the tread surfaces of the wheel. f

5.' The combination with a vehicle wheel having a pair of tread surfaces, of a ring Connected to said vehicle wheel intermediate p the tread surfaces, a `spike extending transversely of the treadsur'faces, an arm conneoting therspike to said ring, pressedvplungers carriedvby and extending from the opposite sides of said ring for se-` curing the ring to the wheel. g l

ln testimony whereof I have hereunto set myhand. j .Y

JooELYN-Eninn oLmviEn and spring- 

